I have a 13R design apartment building with an open unconditioned breezeway that is open from the front of the building to the back of the building. Are the 5 most remote dry sprinklers still to be calculated or can it be 4 most demanding for a light hazard area? The breezeway is less than 75'...
For a dry system using galvanized piping in nfpa 2007 13 edition is it required to have 120 or 100 c-factor? Also is there anything in nfpa 2010 that also requires the use of 100 c-factor for galvanized piping?
What constitutes extended coverage? If I were using a residential 4.9 sprinkler in a corridor under NFPA 2007 13 11.2.3.3.6 specifies or when extended coverage sprinklers are used. Where does the extended start, 16'x16' , 20'x20'? What's standard 14'x14' spacing?
In a 13r design with residential heads in a heated corridor outside the dwelling units, would I have to calculate 5 heads at a .10 density? Is there anything that allows the use of .05 density?
I have a 13r system design with a group of small 13 residential storage closets in the middle of the building. How to I calculate these closets? These storage closets do not have rated walls separating them and no self closing hinges and have a ceiling height of 9'-0". Do I have to calculate...
